package lishizheng.advance;

import java.util.concurrent.locks.ReentrantLock;

//测试Lock锁
public class TestLock {
    public static void main(String[] args) {
        TestLock2 testLock2 = new TestLock2();
        new Thread(testLock2).start();
        new Thread(testLock2).start();
        new Thread(testLock2).start();
    }
}

class TestLock2 implements  Runnable{

    private int ticketNums = 10;
    //定义lock锁
    //可重入锁 re + entrant + lock
    private  final ReentrantLock lock = new ReentrantLock();



    @Override
    public void run() {
        while (true){
            try {
                lock.lock();//加锁
                if(ticketNums > 0){
                    try {
                        Thread.sleep(1000);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                    System.out.println(ticketNums--);
                }
                else break;

            }finally {
                //解锁
                lock.unlock();
            }


        }
    }
}